Get own IP address

Question

How to get my own IP address with Rails?

When I do it like this I got: 127.0.0.1

@ip = request.remote_ip

Is there any way to get the Public IP?

Where is your server running and where is your browser running that you make the request from? Which machine(s)? — Pekka, Aug 10 '12 at 07:32
my rails server running via localhost,. but i need to get the system IP? or the public IP? the 192.168.2.9 is my private address have any way to get that? — amtest, Aug 10 '12 at 07:36
Here is another question about this: http://stackoverflow.com/questions/5029427/ruby-get-local-ip-nix — Lyubomir Vasilev, Aug 10 '12 at 07:38
i have used the same to get the private ip request.remote_ip — amtest, Aug 12 '12 at 16:19

score 45 · Accepted Answer · edited Nov 07 '12 at 18:39

45

Try:

require 'socket'
ip=Socket.ip_address_list.detect{|intf| intf.ipv4_private?}
ip.ip_address if ip

edited Nov 07 '12 at 18:39

the Tin Man

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answered Aug 10 '12 at 08:07

Salil

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10

an even more concise way to write it would be: `Socket.ip_address_list.detect(&:ipv4_private?).try(:ip_address)` – gnz Mar 02 '15 at 11:24
As a note, Socket.ip_address_list was introduced in 1.9.x – rogerdpack Dec 07 '15 at 08:30

score 1 · Answer 2 · edited Dec 06 '16 at 11:16

1

I believe request.env['SERVER_NAME'] works, if you want to reflect the server base address back

edited Dec 06 '16 at 11:16

Petter Friberg

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answered Dec 06 '16 at 11:14

JonB

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score 1 · Answer 3 · answered Jan 26 '21 at 05:45

This does not answer this question. I think someone else can find this answer helpful.

Problem:

I am developing a mobile app. So, When I debug/hot reload/live reload the app in real mobile device. Images url does not work with localhost:3000.

Images works with ip like this: http://192.168.0.102:3000/user/1/profile-223hfkj33.jpg

Problem is Every time I turn on laptop and connect to wifi router, laptop ip changes. So, every-time I need to change asset_host in environments/development.rb file.

Looking at previous answers I found a solution:

Solution:

in environments/development.rb I write this code:

server_address = "#{Socket.ip_address_list.detect(&:ipv4_private?).try(:ip_address)}:3000"
config.asset_host = server_address

puts "Server address: #{server_address}"
# when I run `rails s`, this line prints server address in console

So, It sets asset_host like this: 192.168.0.102:3000
And when I turn on laptop, laptop gets new ip address and it works.

score 0 · Answer 4 · edited Nov 07 '12 at 18:43

0

Try this:

request.env['REMOTE_ADDR']

edited Nov 07 '12 at 18:43

the Tin Man

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answered Aug 10 '12 at 07:35

PradeepKumar

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score 0 · Answer 5 · edited Nov 07 '12 at 18:40

0

Call the page using your IP, not localhost. I.e, 192.168.2.9:3000 in case of the default development environment would yield:

request.env['REMOTE_ADDR']
#=> 192.168.2.9

or:

request.remote_ip 
#=> 192.168.2.9

edited Nov 07 '12 at 18:40

the Tin Man

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answered Aug 10 '12 at 08:11

Pritesh Jain

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2

unfortunately I believe these pertain to the client "making the request" not the server's IP address... – rogerdpack Dec 07 '15 at 08:25

score 0 · Answer 6 · edited Nov 07 '12 at 18:42

0

As your request is local to the server, it returns the "localhost" address, i.e. 127.0.0.1. If you request it from a machine hosted on the internet, it will give you a static IP of the remote server.

If you want the static IP of own internet then visit http://ping.eu and you can see your public IP.

edited Nov 07 '12 at 18:42

the Tin Man

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answered Aug 10 '12 at 13:12

Sandip Ransing

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Get own IP address

6 Answers6